Potential buyers will always focus on the bad ratings and the reasons why there could be a series of 1 star or 2 stars ratings. You should do like amazon : hide the ratings details by default and add an arrow to toggle/view the results. I think showing everything by default will do more harm than good right now.

So any intelligent customer can see that the above is a good app who’s score was ruined by 5 angry customers (and people who bought the wrong thing without thinking).. I remember one user admitted to giving me 1 star because he didn’t like my answers to all his invasive questions about my personal life.

Maybe next step would be having a legitimate reason for low ratings.. stomp out those 1 stars